2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/50254We relate the moduli space of Yang-Mills instantons to quaternionic manifolds. For instanton number one, the Wolf spaces play an important role. We apply these ideas to instanton calculations in N=4 SYM theory.5 pages, JHEP style. Invited talk at the TMR conference "Nonperturbative Quantum Effects 2000", Paris, September 2000High Energy Physics - Theorytext